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2007-07-24 Emmanuele Bassi <ebassi@openedhand.com>

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* clutter/clutter-texture.[ch]: Add a ClutterTextureError
	to be returned by the loader functions; use the GObject API
	to allocate the private data structure instead of managing it
	ourselves; add documentation.
This commit is contained in:
Emmanuele Bassi 2007-07-24 17:38:35 +00:00
parent a37f537cd0
commit a87ede2e12
3 changed files with 112 additions and 80 deletions
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7
ChangeLog
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@ -1,3 +1,10 @@
2007-07-24 Emmanuele Bassi <ebassi@openedhand.com>
* clutter/clutter-texture.[ch]: Add a ClutterTextureError
to be returned by the loader functions; use the GObject API
to allocate the private data structure instead of managing it
ourselves; add documentation.
2007-07-24 Emmanuele Bassi <ebassi@openedhand.com>
* clutter/clutter-actor.c:

123
clutter/clutter-texture.c
View File

@ -30,12 +30,12 @@
* #ClutterTexture is a base class for displaying and manipulating pixel
* buffer type data.
*
* The #clutter_texture_set_from_rgb_data and #clutter_texture_set_pixbuf are
* used to copy image data into texture memory and subsequently realize the
* the texture.
* The clutter_texture_set_from_rgb_data() and clutter_texture_set_pixbuf()
* functions are used to copy image data into texture memory and subsequently
* realize the the texture.
*
* If texture reads are supported by underlying GL implementaion
* Unrealizing/hiding frees image data from texture memory moving to main
* If texture reads are supported by underlying GL implementation,
* unrealizing/hiding frees image data from texture memory moving to main
* system memory. Re-realizing then performs the opposite operation.
* This process allows basic management of commonly limited available texture
* memory.
@ -68,6 +68,8 @@ typedef struct {
gint waste;
} ClutterTextureTileDimension;
#define CLUTTER_TEXTURE_GET_PRIVATE(obj) (G_TYPE_INSTANCE_GET_PRIVATE ((obj), CLUTTER_TYPE_TEXTURE, ClutterTexturePrivate))
struct _ClutterTexturePrivate
{
gint width;
@ -112,6 +114,12 @@ enum
static int texture_signals[LAST_SIGNAL] = { 0 };
GQuark
clutter_texture_error_quark (void)
{
return g_quark_from_static_string ("clutter-texture-error-quark");
}
static guchar*
un_pre_multiply_alpha (const guchar *data,
gint width,
@ -260,7 +268,7 @@ texture_init_tiles (ClutterTexture *texture)
}
if (priv->x_tiles)
g_free(priv->x_tiles);
g_free (priv->x_tiles);
priv->n_x_tiles = tile_dimension (priv->width, x_pot,
priv->max_tile_waste, NULL);
@ -268,7 +276,7 @@ texture_init_tiles (ClutterTexture *texture)
tile_dimension (priv->width, x_pot, priv->max_tile_waste, priv->x_tiles);
if (priv->y_tiles)
g_free(priv->y_tiles);
g_free (priv->y_tiles);
priv->n_y_tiles = tile_dimension (priv->height, y_pot,
priv->max_tile_waste, NULL);
@ -387,19 +395,19 @@ texture_free_gl_resources (ClutterTexture *texture)
else
cogl_textures_destroy (priv->n_x_tiles * priv->n_y_tiles, priv->tiles);
g_free(priv->tiles);
g_free (priv->tiles);
priv->tiles = NULL;
}
if (priv->x_tiles)
{
g_free(priv->x_tiles);
g_free (priv->x_tiles);
priv->x_tiles = NULL;
}
if (priv->y_tiles)
{
g_free(priv->y_tiles);
g_free (priv->y_tiles);
priv->y_tiles = NULL;
}
}
@ -758,8 +766,6 @@ clutter_texture_dispose (GObject *object)
priv = texture->priv;
if (priv != NULL)
{
texture_free_gl_resources (texture);
if (priv->local_pixbuf != NULL)
@ -767,25 +773,10 @@ clutter_texture_dispose (GObject *object)
g_object_unref (priv->local_pixbuf);
priv->local_pixbuf = NULL;
}
}
G_OBJECT_CLASS (clutter_texture_parent_class)->dispose (object);
}
static void
clutter_texture_finalize (GObject *object)
{
ClutterTexture *self = CLUTTER_TEXTURE(object);
if (self->priv)
{
g_free(self->priv);
self->priv = NULL;
}
G_OBJECT_CLASS (clutter_texture_parent_class)->finalize (object);
}
static void
clutter_texture_set_property (GObject *object,
guint prop_id,
@ -893,8 +884,10 @@ clutter_texture_class_init (ClutterTextureClass *klass)
GObjectClass *gobject_class;
ClutterActorClass *actor_class;
gobject_class = (GObjectClass*)klass;
actor_class = (ClutterActorClass*)klass;
gobject_class = (GObjectClass*) klass;
actor_class = (ClutterActorClass*) klass;
g_type_class_add_private (klass, sizeof (ClutterTexturePrivate));
actor_class->paint = clutter_texture_paint;
actor_class->realize = clutter_texture_realize;
@ -903,7 +896,6 @@ clutter_texture_class_init (ClutterTextureClass *klass)
actor_class->hide = clutter_texture_hide;
gobject_class->dispose = clutter_texture_dispose;
gobject_class->finalize = clutter_texture_finalize;
gobject_class->set_property = clutter_texture_set_property;
gobject_class->get_property = clutter_texture_get_property;
@ -1045,7 +1037,7 @@ clutter_texture_init (ClutterTexture *self)
{
ClutterTexturePrivate *priv;
priv = g_new0 (ClutterTexturePrivate, 1);
self->priv = priv = CLUTTER_TEXTURE_GET_PRIVATE (self);
priv->max_tile_waste = 64;
priv->filter_quality = 0;
@ -1062,8 +1054,6 @@ clutter_texture_init (ClutterTexture *self)
}
else
priv->target_type = CGL_TEXTURE_2D;
self->priv = priv;
}
static void
@ -1253,11 +1243,12 @@ clutter_texture_set_from_rgb_data (ClutterTexture *texture,
priv = texture->priv;
g_return_val_if_fail (data != NULL, FALSE);
/* Needed for GL_RGBA (internal format) and gdk pixbuf usage */
g_return_val_if_fail (bpp == 4, FALSE);
texture_dirty = size_change = (width != priv->width
|| height != priv->height);
texture_dirty = size_change =
(width != priv->width || height != priv->height);
prev_format = priv->pixel_format;
@ -1295,8 +1286,8 @@ clutter_texture_set_from_rgb_data (ClutterTexture *texture,
if (priv->is_tiled == FALSE)
{
if (priv->target_type == CGL_TEXTURE_RECTANGLE_ARB
&& !cogl_texture_can_size (CGL_TEXTURE_RECTANGLE_ARB,
if (priv->target_type == CGL_TEXTURE_RECTANGLE_ARB &&
!cogl_texture_can_size (CGL_TEXTURE_RECTANGLE_ARB,
priv->pixel_format,
priv->pixel_type,
priv->width,
@ -1312,12 +1303,12 @@ clutter_texture_set_from_rgb_data (ClutterTexture *texture,
priv->target_type = CGL_TEXTURE_2D;
}
if (priv->target_type == CGL_TEXTURE_2D
&& !cogl_texture_can_size (CGL_TEXTURE_2D,
if (priv->target_type == CGL_TEXTURE_2D &&
!cogl_texture_can_size (CGL_TEXTURE_2D,
priv->pixel_format,
priv->pixel_type,
clutter_util_next_p2(priv->width),
clutter_util_next_p2(priv->height)))
clutter_util_next_p2 (priv->width),
clutter_util_next_p2 (priv->height)))
{
priv->is_tiled = TRUE;
}
@ -1374,13 +1365,16 @@ clutter_texture_set_from_rgb_data (ClutterTexture *texture,
* @width: Width in pixels of image data.
* @height: Height in pixels of image data
* @flags: #ClutterTextureFlags
* @error: FIXME.
* @error: Return location for a #GError, or %NULL.
*
* Sets a #ClutterTexture from YUV image data.
* Sets a #ClutterTexture from YUV image data. If an error occurred,
* %FALSE is returned and @error is set.
*
* Return value: TRUE on success, FALSE on failure.
* This function is likely to change in future versions.
*
* Since 0.4. This function is likely to change in future versions.
* Return value: %TRUE if the texture was successfully updated
*
* Since 0.4.
**/
gboolean
clutter_texture_set_from_yuv_data (ClutterTexture *texture,
@ -1393,8 +1387,15 @@ clutter_texture_set_from_yuv_data (ClutterTexture *texture,
ClutterTexturePrivate *priv;
gboolean texture_dirty = TRUE, size_change = FALSE;
if (!clutter_feature_available(CLUTTER_FEATURE_TEXTURE_YUV))
g_return_val_if_fail (CLUTTER_IS_TEXTURE (texture), FALSE);
if (!clutter_feature_available (CLUTTER_FEATURE_TEXTURE_YUV))
{
g_set_error (error, CLUTTER_TEXTURE_ERROR,
CLUTTER_TEXTURE_ERROR_NO_YUV,
"YUV textures are not supported");
return FALSE;
}
priv = texture->priv;
@ -1427,27 +1428,38 @@ clutter_texture_set_from_yuv_data (ClutterTexture *texture,
if (texture_dirty)
{
gint new_width, new_height;
new_width = clutter_util_next_p2 (priv->width);
new_height = clutter_util_next_p2 (priv->height);
/* FIXME: need to check size limits correctly - does not
* seem to work if correct format and typre are used so
* seem to work if correct format and type are used so
* this is really a guess...
*/
if (cogl_texture_can_size (CGL_TEXTURE_2D,
CGL_RGBA,
CGL_UNSIGNED_BYTE,
clutter_util_next_p2(priv->width),
clutter_util_next_p2(priv->height)))
new_width, new_height))
{
cogl_texture_image_2d (priv->target_type,
priv->pixel_format,
clutter_util_next_p2(priv->width),
clutter_util_next_p2(priv->height),
new_width, new_height,
priv->pixel_format,
priv->pixel_type,
NULL);
}
else
{
g_set_error (error, CLUTTER_TEXTURE_ERROR,
CLUTTER_TEXTURE_ERROR_OUT_OF_MEMORY,
"Unable to allocate a texture of %d by %d pixels",
new_width,
new_height);
return FALSE; /* FIXME: add tiling */
}
}
cogl_texture_sub_image_2d (priv->target_type,
0,
@ -1483,10 +1495,15 @@ clutter_texture_set_from_yuv_data (ClutterTexture *texture,
* clutter_texture_set_pixbuf:
* @texture: A #ClutterTexture
* @pixbuf: A #GdkPixbuf
* @error: Return location for a #GError, or %NULL
*
* Sets a #ClutterTexture image data from a #GdkPixbuf
* Sets a #ClutterTexture image data from a #GdkPixbuf. In case of
* failure, %FALSE is returned and @error is set.
*
**/
* Return value: %TRUE if the pixbuf was successfully set
*
* Since: 0.4
*/
gboolean
clutter_texture_set_pixbuf (ClutterTexture *texture,
GdkPixbuf *pixbuf,

14
clutter/clutter-texture.h
View File

@ -38,6 +38,14 @@ G_BEGIN_DECLS
#define CLUTTER_IS_TEXTURE_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE ((klass), CLUTTER_TYPE_TEXTURE))
#define CLUTTER_TEXTURE_GET_CLASS(obj) (G_TYPE_INSTANCE_GET_CLASS ((obj), CLUTTER_TYPE_TEXTURE, ClutterTextureClass))
typedef enum {
CLUTTER_TEXTURE_ERROR_OUT_OF_MEMORY,
CLUTTER_TEXTURE_ERROR_NO_YUV
} ClutterTextureError;
#define CLUTTER_TEXTURE_ERROR (clutter_texture_error_quark ())
GQuark clutter_texture_error_quark (void);
typedef struct _ClutterTexture ClutterTexture;
typedef struct _ClutterTextureClass ClutterTextureClass;
typedef struct _ClutterTexturePrivate ClutterTexturePrivate;
@ -69,9 +77,9 @@ struct _ClutterTextureClass
typedef enum ClutterTextureFlags
{
CLUTTER_TEXTURE_RGB_FLAG_BGR = (1<<1),
CLUTTER_TEXTURE_RGB_FLAG_PREMULT = (1<<2), /* FIXME: not handled */
CLUTTER_TEXTURE_YUV_FLAG_YUV2 = (1<<3)
CLUTTER_TEXTURE_RGB_FLAG_BGR = (1 << 1),
CLUTTER_TEXTURE_RGB_FLAG_PREMULT = (1 << 2), /* FIXME: not handled */
CLUTTER_TEXTURE_YUV_FLAG_YUV2 = (1 << 3)
/* FIXME: add compressed types ? */
} ClutterTextureFlags;